Manufacture of power-press pattern-sheets.



E. LUVINSOHN. MANUFACTURE OF POWER PRESS PATTERN SHEETS. APPLIOATION FILED OCT. 21, 1908.

l,l%5,572 Patented 'Jan. 19, 1915'.

Leww- 2? fla piece.

STA

'NUFACTURE 0F POWER-PRESS PATTERN-SHEETS.

mantra Application filed October 21,

To all whom it may concern:

Be it known that I, EMIL Lovmsorm, a subject of the King of Prussia, German Emperor, residing at oHardenbergstrasse, Charlottenburg, Kingdom of Pruss1a,'German Empire, have invented certain new and useful Improvements in the Manufacture of Power-Press Pattern-Sheets, of which the following is hereby declared to be a full, clear, and exact description.

The invention is illustrated in the acconr panying drawing, in which the single figure represents a transfer sheet on which the pattern is printed, as hereinafter explained.

Heretofore, pattern sheets printed in appropriate design have been employed. for transfer of the design on to the work-sampleor piece in cloth, leather or other material selected for embroidery. At times, the outline design was impressed upon the pattern sheet by admixing the selected color base in dry state with melted wax serving as a carrier to efiect the imprint; or else the struck sheet with its ordinary ink imprint yet moist was sprinkled over with rosin to coat the fresh impresssion. In either instance the impression taken was capable of -melting for simultaneous transfer of the color design from the pattern sheet, once a hot smoothing iron was run across the back of the sheet laid face down upon the work But neither planlent itself to the striking on of numerous replica,'as in customary use of the ordinary printing or lithograph press equippedamong other detailswith the special stereotype blockbearing thereon the selected design. Nor is common printers ink a suitable medium proper to impress a pattern sheet, especially meant for the manifold transfer of the design.

My invention is based upon the discovery that certain of the anilin dye studs, derived from coal tar, not only melt at the usual temperature of a smoothing iron, 6. 9., 200 C., but even'heighten in color under high heat and lend themselves beside to compatible blending with a non-siccative binder, the two together-being taken up by the inking roll of the press'in course of revolution and spread as arconsistent film over the raised pattern of the stereotype block preparatory to striking ofl the sheet. The resultant sheet a, bearing the design in pattern b,

:once it dries can be applied in reverse to numerous work samples, and the pattern he thus repeatedly transferred by simple use of specification of Letters ratent.

1908. Serial No. 458,900.

a hot smoothing iron or roll run over the back of the fiat sheet. The characteristic quality of the selected dye stufi which allows it to blend with the compatible binder :free from risk of decomposition and to readily melt partially or fractionally in unison at the prescribed heat, permits the pattern sheets to be runofi' in multiple from the fam liaroprinting press in readiness for impnediate use alone, without further preparaion.

in usual practice, the special anilin dye stufis such as Victoria green, Victoria blue, rhodamine or cerosin, meet the requirements and having been found fit may be selected indifierently, although other anilin dyes, possessing like characteristics, may be chosen instead, if desired. Dyes of somber hue which heighten in color at the heat of the smoothing-iron better express the details of the design and are preferred, accordingly.

The chosen dye stud is admixed with some suitable binder, in moist state like printers ink or varnish compound, nearly dry, either of which will blend with the dye stud to form a moist compound capable of easy distribution by the inking-roll of the multiple or lithographic press. Mineral oil rendered viscid by addition of some resinous material, will suffice as a varnish-like binder or carrier, in which ordinary rosin, copal or the like, may serve for the resinous ingredient, although other resinous substances compatible with the selected anilin dye and melting with it under heat of the smoothing iron, may be chosen instead. Aside from cheap and easy cold production in multiple at ordinary temperature in the printing press, the pattern sheets thus struck off lend themselves alone to repeated transfer onto successive work-samples at the higher heat of a smoothing-iron.

The novellfeatures of this invention consist in that the pattern is printed cold on to the transfer paper and that the pigment used is not all transferred to the fabric at the first impression but the same transfer can be used to give as many as eight impressions, the last of the impressions bein almost as powerful as the first by virtue o the fact that the pigment used deepens by the application of heat. Another feature is that the designs executed by the present process can beprinted ofi' on a rotary or similar machine at the rate of 30,000 per hour, a rate absolutely unapproachable in ratem'ea Jan. re, rain.

processes as experiments ters Patent, is 2- 1. A transfer sheet bearing its chosen design medium in cold, moist imprints derived from a select anilin dye constituting the medium or agent specially fitfor repeated fractional softening or melting under a hot smoothing iron.

2. The method of making a transfer pattern sheet, which consists in admixing a fit anilin dye melting or softening fractionally at the heat of a smoothing iron together with a compatible carrier rendered viscid to properly spread under an inking roll and with such mixture imprinting the selected design cold and moist upon a pattern blank, substantially as described.

In testimony whereof I afiix my signature in presence of twowitnesses.

. EMIL LOVINSOHN.

Witnesses:

HENRY HASI'ER,

' WOLDEMAR mm. 

